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UBI: add a helper function for updatting on-flash layout volumes 

Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
shengyong 2015-05-26 10:07:10 +00:00 committed by Richard Weinberger
parent e96a8a3bb6
commit 2848594a20
1 changed files with 24 additions and 21 deletions
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45
drivers/mtd/ubi/vtbl.c
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@ -69,6 +69,26 @@ static void self_vtbl_check(const struct ubi_device *ubi);
/* Empty volume table record */
static struct ubi_vtbl_record empty_vtbl_record;
/**
* ubi_update_layout_vol - helper for updatting layout volumes on flash
* @ubi: UBI device description object
*/
static int ubi_update_layout_vol(struct ubi_device *ubi)
{
struct ubi_volume *layout_vol;
int i, err;
layout_vol = ubi->volumes[vol_id2idx(ubi, UBI_LAYOUT_VOLUME_ID)];
for (i = 0; i < UBI_LAYOUT_VOLUME_EBS; i++) {
err = ubi_eba_atomic_leb_change(ubi, layout_vol, i, ubi->vtbl,
ubi->vtbl_size);
if (err)
return err;
}
return 0;
}
/**
* ubi_change_vtbl_record - change volume table record.
* @ubi: UBI device description object
@ -83,12 +103,10 @@ static struct ubi_vtbl_record empty_vtbl_record;
int ubi_change_vtbl_record(struct ubi_device *ubi, int idx,
struct ubi_vtbl_record *vtbl_rec)
{
int i, err;
int err;
uint32_t crc;
struct ubi_volume *layout_vol;
ubi_assert(idx >= 0 && idx < ubi->vtbl_slots);
layout_vol = ubi->volumes[vol_id2idx(ubi, UBI_LAYOUT_VOLUME_ID)];
if (!vtbl_rec)
vtbl_rec = &empty_vtbl_record;
@ -98,15 +116,10 @@ int ubi_change_vtbl_record(struct ubi_device *ubi, int idx,
}
memcpy(&ubi->vtbl[idx], vtbl_rec, sizeof(struct ubi_vtbl_record));
for (i = 0; i < UBI_LAYOUT_VOLUME_EBS; i++) {
err = ubi_eba_atomic_leb_change(ubi, layout_vol, i, ubi->vtbl,
ubi->vtbl_size);
if (err)
return err;
}
err = ubi_update_layout_vol(ubi);
self_vtbl_check(ubi);
return 0;
return err ? err : 0;
}
/**
@ -121,9 +134,7 @@ int ubi_change_vtbl_record(struct ubi_device *ubi, int idx,
int ubi_vtbl_rename_volumes(struct ubi_device *ubi,
struct list_head *rename_list)
{
int i, err;
struct ubi_rename_entry *re;
struct ubi_volume *layout_vol;
list_for_each_entry(re, rename_list, list) {
uint32_t crc;
@ -145,15 +156,7 @@ int ubi_vtbl_rename_volumes(struct ubi_device *ubi,
vtbl_rec->crc = cpu_to_be32(crc);
}
layout_vol = ubi->volumes[vol_id2idx(ubi, UBI_LAYOUT_VOLUME_ID)];
for (i = 0; i < UBI_LAYOUT_VOLUME_EBS; i++) {
err = ubi_eba_atomic_leb_change(ubi, layout_vol, i, ubi->vtbl,
ubi->vtbl_size);
if (err)
return err;
}
return 0;
return ubi_update_layout_vol(ubi);
}
/**